Magnetic brake.



E. I. FERRY.

MAGNETIC BRAKE.

APPLICATION FILED MAR. Il, 94,784

|||| Il Il Il IH II 5 I III' I I IIII Patented Feb.18,'1919.

2 SHEETS-SHEEI I.

E. J. FERRY.

MAGNETIC BRAKE.

APPLICATION man MAR. n. 191s.

2 SHEETS-SHEET 2.

Patented Feb. 18, 1919.

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:MAGNETIC BRAKE.

Specication of Letters Patent.

Patenten ren. is., raie.'

Application led March 11, 1918. Serial 1\To. 223,235.

' To all wtom it may concern:

First, to ,provide an improved magnetic brake for motor vehicles and the like;

Second, to provide an improved magnetic brake adapted to operate the braking mechanism of a motor vehicle when either the brake or clutch pedal, or the hand brake is operated to retard the progress of the vehicle;

" Third, to normally .retain the magnetic brake inoperative until a predetermined speed has been attained by the vehicle and to render the said brake operative to retard the progress of the vehicle until such progress shall have entirely ceased. f

I accomplish these several objects by means of the device disclosed in the drawings forming a part of the present specification wherein-like characters of reference are used to designate similar parts throughout the said Speciiicationand drawings and in whichl Figure 1 is a plan View of a motor vehicle chassls s disclosing my invention applied thereto F 'g'. 2 is a partly broken side elevation of Fig. 1;

Fig. 3 is a side elevation on an enlarged scale disclosing` the rheostat operatively connected to the pedals and hand brake;

4 'is a longitudinal sectional view taken on the line 4-4 of Fig. 3 of the drawings;

Fig. 5 is a broken plan view of the speedometer connection; and

Fig. 6 is a front elevation of Fig. 5 with the speedometer housing removed.

Referring to the drawings the numeral 1 :A is used to designate a solenoid secured to the" frame or chassis 2x The movable core 3 of the solenoid 1 is operatively connected to an arm 4 upon a shaft 6 rotatably mounted '26 upon the clutch, brake i upon the chassis 2 and having connections 7 to the hand brakes 8.

-A suitable battery 9, or other suitable source of electrical energy, hasa connection 10 to one end of the solenoid coil while the other end of said coil is connected by means of a connection 11 to a contact arm on a suitable rheostat 12 which may be secured to the chassis 2 adjacent the pedals and hand brake of the vehicle. y l

A connection 14 leads from the rheostat 12 to the speedometer indicated in general by the numeral 16, from whence` a connection 17 leads back yto the battery 9.

The contact arm 21 of the rheostat 12 is provided with a sleeve 22 which may be rotatably mounted upon the gear shift shaft 23 said sleeve,.22 being provided with projections 24 which lie within the path of pins edals and brake lever 27, 28 and 29 respectlvely.

By means of this arrangement the rheostat contact arm 21 is operated tocut out resistance units within the rheostat 12 when either' the pedals 27 and 28 or the emergency hand brake 29 is operated thereby rpermitting a flow of full strength current to flow to the solenoid 1 when either of the above mentioned elements is operated to its limit, the

purpose 'of which will hereinafter be more l fully set forth.

The connections 14 andi17 from the rheostat 12 and battery 9 respectively, terminate in contacts 31 and 32 adjacent the speedometer 16 as indicated in Fig. 6 ofthe drawings.

These contacts -31 and 32` are arranged to be closed by means of a contact plate 33 secured to and insulated from a lever 34 ypivotallv mounted as at 36. l The central portion adjacent the speedometer 16 is formed arcuate as at 35 so as to lie close to the l.

speedometer 16.

The arcuate portion 35 is provided with a dependin arcuate arm 37 having an extension 38 slidably mounted thereon and engaging a pin 39 within an adjustingarm 41 whereby the extension 38 may be moved to shorten or lengthen the dependin arm 37 .y

A pin 42, having a beveled endg, is mounted upon the speedometer 16 and when the said speedometer'lG is rotated by the increasing speed of the vehicle the pin 42 traverses an inclined surface 43 formed at 'the junction ofA thefarm 37 land the lever .34 and thereby raises said lever 34 and removes the contact 33 from the terminals 31 and l32 'be broken el; 'she rheosta't While hereloy breaking "che circuit so that no cnrrentl een non' io Jche solenoicl l until e pre- (leterlninecl speed is attained by the. Vehicle which sneed is in proportion o the eff-conci: ed iengfch of the erin 3T and extension hereoiu. @When ehe end oi the erension 38 is traversed by che pin e the lever is released and ihe 33 on the end 'thereof reps o-no he'erniinels 3l and and closee the circuit i there peine. bin; es long as the cln'cch enfl brake pedals, 2'6" enel respeciivelj,v e-ie'in norniel position Jche circni'; is open between he rheoste l2 and VIdie solenoie. i so 'that the braking; mechanism will noi be opermee;

By ineens oie. 'ihis e'frengeinen e. vehicle may be clriif'en liiongh congested e slowv reife or epee@ and 'die inzigneic brake will not be ogei'etecl et each increment oclutch pedal when it is desired to coast o temporarily disconnect 'the inoloi' from ehe vehicle in only slightly arrest or reeicl progress or increased speed of seicl Vehicle.

in operation the length of the extension 38 nniy be ecljusiefl or sei'I "ico be released by 'ehe pin e2 at any speed above l5 or 2O iniles per hour. filler such e sgeecl has 1neen ezeinecl should it lie clesirecl to suddenly reieisl progress of the Tvehicle es in en emergency.1 cese. the cpereion of the clutch 'pedal 273 lie root brake pedal Q89 or the einergencjyv hencl oi-aire lever 2Q. snch operation c'f izhen or all of these several elemeni'cs will oper-ie no cui; oni. resistences Within che heostet i2 indcanse full current io flow Uhrongh 'the solenoid l and thereby effectively operai 4lie braking mechanism.

lt will loe observed thee es che speed of `die 7ff'ehicle is being constant-ly decreased the @in e2 oil the speeclonieer 'will reverse ils direc tion of nieve-nient enel 'will irai/'el on'ercl the conncs 3l and 32 or enzi-clockwiseiis 'the `iin approaches 'the enel of he extension' 3S insiemi of engaging; said extension which 'then lies below it, it will traverse. the ercuee portion of the lever 9 'l sind inove he seid of 'the ng che terminals 3l and 32 so "chai nll ce" 'will continue eo llcw through the solenoid l until the progrees of ehe Vehicle shell have 4heen entirely foresee-ll.

lllhile Lche vehicle is traveling e:-;- reniely low rete oi speed 'the contec'f'; 3S 'will cloSe the circuit through the coN or lerrninels 3l and 3Q but lthe circuit -will the emails lever 3l slightly outward by ineens beveled end oi"- ibhe 'pin tneieoy leem Contact plaie 33 continually across "eh h brake in normal coniliioii, lter che Vehicle has elimine@ e. speedL sn'y` ..1^- ncienl. lo cen-.se nin e@ to ro. 9. ,.1 ,.vJF '11' el eno bleek cie encon,

only *che 'oo brake which may i7ce l*Loue applying the magnetic brake circuit is broken en the speed.-

ne W

sure will be npplieo co onion's certain resislmices Wihin the rheoo slL-a'b is obvious freni Jche oregoing limi; l

hm' proviclecl nn improved magnetic brake "for niotoi' Vehicles and he like wherein die cpere'ion of eiher clnch pedal, foot brake or emergency hand brake will operare seicl magnetic clutch. t is also evident that l' here provided ineens for rendering 'he inegne'ic Torake inoperative certein slow speeds o' zicljue'ing he speed et which seid brake will remain inoperuive.

Hering jhns described. :my invention what n es new enel clesiie secure lay Lec- .Lent is l. inegneic brake for inotor vehicles and alie like comprising esolenoicl opere- "Cii'ely connececl to the' braking nieclienisin of 'the vehicle; e source of electrical energy cennecefl to tie solenoid; ineens opere'iveqg connected '5o die pedals enel hencl brake of che Vehicle and normelly disconnecting ne source of elect'ficel energy from Jche solenoicl and arengecl 5.o close seid source '53o 'the solenoid to ogerate the saine and thereby apply the lore-kes when either pedal ci the lionel brake is operaceel.

2. A niagneie lors-ke for motor vehicles enel the like comprising e.. solenoid opere.- cively connecitecl to ihe brekin "'neclinnisin of: ehe vehicle; e source of elecc4 el eneijg'j,v7 connecte@ to the solenoid; ineens opereiifely connec'necl te ehe pedals anal lie-nel brake bhe Vehicle enel normally disconnecting me soince of elecricel energy from like so" noifl and errang-eil close seicl source to eolenoicl to operate seine and en l ely `the brakes when eil-'cher pedal or Ieneke is ojeera'ecl; and ineens for norni] 'fet -7`ing en open cifcni between ehe source 'ical energy and she soleooif` nnlil nele e preclecerniinecl speeil, i magnetic brake or meier vehicles e like eoninrising e. solenoid onen L connect-el to 'folie braking' nie-elimini; of the T.'eliicl a source o' .l etricel energyT connecgeil lo Jie solenoid; e rheosa connrce oin electrical energy :incl

" nine opereively centhe band brake of the vehicle to normally disconnect the energy from the solenoid and to connect said energy with said solenoid when either pedal or hand brake is operated.

4. A magnetic brake for motor vehicles and the like comprising a solenoid operatively connected to the braking mechanism of the vehicle; a source of electrical energy connected to the solenoid; a rlieostat connected to the source of electrical energy and to the solenoid; and means operatively connecting the rheostat to both pedals and to the hand brake of the vehicle to normally disconnect the source of energy from the solenoidand to connect said source of energy With said solenoid when either pedal or hand brake is operated; and means operatively connected to the speedometer of the vehicle to normally retain the circuit 'between the source of electrical energy and the solenoid open until the vehicle attains a predetermined speed.

5. A magnetic brake for motor vehicles and the like comprising a solenoid operatively connected to the braking mechanism of the vehicle; a source of electrical energy connected to the solenoid; a rheostat connected to the source of electrical energy and to the solenoid; and means operatively connecting the rheostat to both pedals and to the hand brake of the vehicle to normally disconnect the source of energy from the solenoid and to connect said source of energy with said solenoid when either pedal or hand brake is operated; and means operatively connected to the speedometer of the vehicle to normally retain the circuit between the source of electrical energy and the solenoid open until the vehicle attains a predetermined speed and to normally retain said circuit closed While the speed of the vehicle is decreasing until said vehicle becomes stationary.

6. A magnetic brake for motor vehicles and the like comprising a solenoid operatively connected to the braking mechanism of the vehicle; a source of electrical energy connected to the solenoid; a rheostat connected to the source of electrical energy and to the solenoid; means operatively connected to both pedals and the hand brake of the vehicle to normally disconnect the source of energy from the solenoid and to connect said source of energy with the solenoid When either pedal or hand brake is operated; a.

lever actuated by the speedometer of the vehicle to open the circuit between the source of electrical energy and the solenoid until the vehicle attains a predetermined speed and to automatically close said circuit and to keep it closed While the speed of the vehicle is being magnetic brake until the progress of said vehicle is entirely arrested. y

7. A magnetic brake for motor vehicles and the like comprising a solenoid operatively connected to the braking mechanism of the vehicle; a source of electrical energy connected to the solenoid; a rheostat connected to the source of electrical energy and to the solenoid; means operatively connected to both pedals and the hand brake of the vehicle to normally disconnect the source of energy from the solenoid and to connect said source of energy With the solenoid when either pedal or hand brake is operated; a lever actuated bythe speedometer of the velhicle to open the circuit between the source of electrical energy and the solenoid until the vehicle attains a predetermined speed and to automatically close said circuit and to keep it closed While the speed of the vehicle is being decreased by the action of the magnetic brake until the progress of said vehicle is entirely arrested; and means for ad- )Listing the speed at which the said lever operates to close the circuit.

In witness whereof I hereunto set my signature.

EARL J. FERRY.

60 decreased by the action of the 

